Description

Isooctadecanoic Acid, Monoester With Propane-1,2-Diol is a specialized branched-chain fatty acid ester derived from isostearic acid and propylene glycol. This unique structure provides excellent oxidative stability, low-temperature fluidity, and compatibility with a wide range of organic materials, making it a valuable non-polar emollient and lubricant. It is primarily sought after by formulators in the personal care, cosmetics, and specialty lubricants industries seeking high-performance, skin-friendly ingredients with enhanced sensory properties and shelf life.

Application

• Personal Care & Cosmetics: Acts as a premium emollient and skin-conditioning agent in creams, lotions, sunscreens, and lipsticks, providing a non-greasy, silky feel.
• Hair Care Products: Used in conditioners, hair serums, and styling products to impart shine, reduce frizz, and improve combability.
• Color Cosmetics: Serves as a pigment dispersant and binder in makeup formulations, enhancing color payoff and texture.
• Pharmaceutical Topicals: Employed as an excipient in ointments and topical drug delivery systems for its emollient and solvent properties.
• Specialty Lubricants & Release Agents: Functions as a synthetic base oil or additive in food-grade and industrial lubricants, mold release agents, and textile fiber lubricants.
• Plasticizers & Polymer Additives: Used as a secondary plasticizer or lubricant in PVC and other polymer processing to improve flexibility and processing.

Basic Information

Product Name	Isooctadecanoic Acid, Monoester With Propane-1,2-Diol
CAS No.	68171-38-0
Molecular Formula	C21H42O3
Molecular Weight	342.56 g/mol
Synonyms	Propylene Glycol Isostearate; PG Isostearate; 1,2-Propanediol Mono(isooctadecanoate); Isostearic Acid, Monoester with 1,2-Propanediol; Isopropyl Isostearate (related); 2-Hydroxypropyl Isostearate; Lexol PG-800 (typical trade name); Emerest 2388 (typical trade name)
EINECS	Contact for details

Quality Control

Our Isooctadecanoic Acid, Monoester With Propane-1,2-Diol is manufactured under a cGMP-compliant quality management system. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and performance. Key parameters such as acid value, saponification value, hydroxyl value, and fatty acid composition are verified. Certificates of Analysis (COA) documenting full specifications are available for every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, pale yellow to colorless liquid
Identification (IR)	Conforms to structure
Acid Value (mg KOH/g)	≤ 2.0
Saponification Value (mg KOH/g)	155 - 175
Hydroxyl Value (mg KOH/g)	150 - 170
Iodine Value (g I2/100g)	≤ 5.0
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.